people living in low-lying areas the government may say its floodplain, little things and big things is how the weather is going to change our lives over the next generation, let's say. ♪ ♪ >> i could go on and on technince i started weather over 40 years ago. >> i'm spencer christian. >> when i first did the weather in 1972, we had a plex si covered glass map in the studio. i had a grease pencil and i drew the symbols and drew snowflakes. then we got into something else, that allows a person to stand in front of a screen but all the images you see at home is somehow superimposed and transmitted. >> it's been the advent of the computer that has made our job better in the sense we are forecasting better, in the sense we can see things longer out, but also raised expectations and made it harder in that respect. everybody expects you work with computer modems, aren't they perfect? no, not really but they are getting better. these weather computer models that have algorithms, we can't do them by hand. it takes a super computer three hours to crunch a forecast. you try doing that by h